college algebra function problems 2

Mathematics
Tutor: None Selected Time limit: 1 Day

i am stuck on the following problem. here is a pic of the problem

http://imgur.com/BtOupv7

any help would be appreciated

Nov 19th, 2014

4x2+kx+14=0

Discriminant = k2-4*4*14 =k2-224 =0 for one real solution

k=±√224=4√14 


Nov 19th, 2014

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